Merge branch 'master' of /home/tuba/pclsync

Author: Ivan Stoev

.gitignore

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+*.o
+*.a

LICENSE

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+/* Copyright (c) 2013-2014 Anton Titov.
+ * Copyright (c) 2013-2014 pCloud Ltd.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of pCloud Ltd nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL pCloud Ltd BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+

Makefile

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+#CC=cc
+AR=ar rcu
+RANLIB=ranlib
+#USESSL=openssl
+USESSL=mbed
+
+#CFLAGS=-Wall -Wpointer-arith -O2 -g -fsanitize=address -mtune=core2
+CFLAGS=-Wall -Wpointer-arith -O2 -g -fno-stack-protector -fomit-frame-pointer -mtune=core2 -I../sqlite
+#CFLAGS=-O2 -g -pg
+
+LIB_A=psynclib.a
+
+ifeq ($(OS),Windows_NT)
+    CFLAGS += -DP_OS_WINDOWS
+    LIB_A=psynclib.dll
+    AR=$(CC) -shared -o
+    RANLIB=strip --strip-unneeded
+    LDFLAGS=-s
+else
+    UNAME_S := $(shell uname -s)
+    UNAME_V := $(shell uname -v)
+    ifeq ($(UNAME_S),Linux)
+        CFLAGS += -DP_OS_LINUX
+            ifneq (,$(findstring Debian,$(UNAME_V)))
+                CFLAGS += -DP_OS_DEBIAN
+            endif
+	LDFLAGS += -lssl -lcrypto -lfuse -lpthread -lsqlite3 -lzlib
+    endif
+    ifeq ($(UNAME_S),Darwin)
+        CFLAGS += -DP_OS_MACOSX -I/usr/local/ssl/include/
+        CFLAGS += -DP_OS_MACOSX -I/usr/local/include/osxfuse/
+	LDFLAGS += -lssl -lcrypto -losxfuse -lsqlite3 -framework Cocoa -L/usr/local/ssl/lib
+        #USESSL=securetransport
+    endif
+endif
+
+OBJ=pcompat.o psynclib.o plocks.o plibs.o pcallbacks.o pdiff.o pstatus.o papi.o ptimer.o pupload.o pdownload.o pfolder.o\
+     psyncer.o ptasks.o psettings.o pnetlibs.o pcache.o pscanner.o plist.o plocalscan.o plocalnotify.o pp2p.o\
+     pcrypto.o pssl.o pfileops.o ptree.o ppassword.o prunratelimit.o pmemlock.o pnotifications.o pexternalstatus.o publiclinks.o\
+     pbusinessaccount.o pcontacts.o poverlay.o poverlay_lin.o poverlay_mac.o poverlay_win.o pcompression.o pasyncnet.o ppathstatus.o
+
+OBJFS=pfs.o ppagecache.o pfsfolder.o pfstasks.o pfsupload.o pintervaltree.o pfsxattr.o pcloudcrypto.o pfscrypto.o pcrc32c.o pfsstatic.o plocks.o
+
+OBJNOFS=pfsfake.o
+
+ifeq ($(USESSL),openssl)
+  OBJ += pssl-openssl.o
+  CFLAGS += -DP_SSL_OPENSSL
+endif
+ifeq ($(USESSL),securetransport)
+  OBJ += pssl-securetransport.o
+  CFLAGS += -DP_SSL_SECURETRANSPORT
+endif
+ifeq ($(USESSL),mbed)
+  OBJ += pssl-mbedtls.o
+  CFLAGS += -DP_SSL_MBEDTLS -I../../mbedtls-1.3.10/include/
+endif
+
+OBJ1=overlay_client.o
+
+all: $(LIB_A)
+
+$(LIB_A): $(OBJ) $(OBJNOFS)
+	$(AR) $@ $(OBJ) $(OBJNOFS)
+	$(RANLIB) $@
+
+fs: $(OBJ) $(OBJFS)
+	$(AR) $(LIB_A) $(OBJ) $(OBJFS)
+	$(RANLIB) $(LIB_A)
+
+cli: fs
+	$(CC) $(CFLAGS) -o cli cli.c $(LIB_A) $(LDFLAGS)
+	
+overlay_client:
+	cd ./lib/poverlay_linux && make
+
+clean:
+	rm -f *~ *.o $(LIB_A) ./lib/poverlay_linux/*.o ./lib/poverlay_linux/overlay_client
+

cli.c

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+#include <stdio.h>
+
+#include "psynclib.h"
+
+int main()
+{
+	psync_init();
+	psync_start_sync(NULL, NULL);
+	psync_fs_start();
+	printf("Press enter to exit/umount\n");
+	getc(stdin);
+	psync_fs_stop();
+	psync_destroy();
+	return 0;
+}

doc/crypto.txt

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+File encryption format
+
+We have a global AES-256 key and 128 bit global (for the file) IV.
+
+Sector = 4096 bytes.
+
+The file is split in 4096-byte blocks. Each block is encrypted using
+AES256-CTR.
+
+For every block there's one SIGN 128-bit block, the format for which is:
+
+hmac-sha1
+and over it, in the beginning:
+2 bits revision length (1, 2 or 3 bytes)
+next 6 bits as from hmac-sha
+1,2 or 3 bytes revision
+
+the hmac-sha1 is calculated on the following, concatenated:
+data;
+sector id (64 bit);
+revision id (32 bit).
+
+the secret is the per-file IV.
+
+(sector id is the consecutive number of 4k sector of DATA/plaintext in
+the file, starting from 0 (zero) )
+
+For the AES256-CTR, the IV is the 128 bit SIGN block.
+
+The SIGN blocks are written for every 256 blocks after them in a 4KB
+block, encrypted using AES-ECB. They cannot repeat, as the sector number
+is different for each one.
+
+
+The SIGN blocks create a hash tree. The first level is the SIGN blocks,
+the second level is blocks of hmac-sha1 of every 256 lower-level SIGN
+blocks (a sector), the third is hmac-sha1 of the lower level of 256
+hmac-sha1 blocks, and up to until you're left with only one block, which
+is at the end of the file. All such blocks are encrypted with
+AES256-ECB.
+
+
+On every change of a block, the revision is increased with 1. On
+revision overflow (2^24) the file SHOULD be reencrypted with a different
+IV.
+
+Every read reads at least 4KB, the block with the SIGN block related to
+it, and the upper level of the SIGN, to verify them.

lib/poverlay/1.ico

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+<?xml version="1.0" encoding="utf-8"?>
+<ClassDiagram /> 

lib/poverlay/2.ico

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+/* Copyright (c) 2013 pCloud Ltd.
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright
+*       notice, this list of conditions and the following disclaimer in the
+*       documentation and/or other materials provided with the distribution.
+*     * Neither the name of pCloud Ltd nor the
+*       names of its contributors may be used to endorse or promote products
+*       derived from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL pCloud Ltd BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#pragma once
+
+#pragma warning( disable: 4049 )  /* more than 64k source lines */
+
+
+#ifdef __cplusplus
+extern "C"{
+#endif 
+
+
+#include <rpc.h>
+#include <rpcndr.h>
+
+#ifdef _MIDL_USE_GUIDDEF_
+
+#ifndef INITGUID
+#define INITGUID
+#include <guiddef.h>
+#undef INITGUID
+#else
+#include <guiddef.h>
+#endif
+
+#define MIDL_DEFINE_GUID(type,name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) \
+  DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)
+
+#else // !_MIDL_USE_GUIDDEF_
+
+#ifndef __IID_DEFINED__
+#define __IID_DEFINED__
+
+  typedef struct _IID
+  {
+    unsigned long x;
+    unsigned short s1;
+    unsigned short s2;
+    unsigned char  c[8];
+  } IID;
+
+#endif // __IID_DEFINED__
+
+#ifndef CLSID_DEFINED
+#define CLSID_DEFINED
+  typedef IID CLSID;
+#endif // CLSID_DEFINED
+
+#define MIDL_DEFINE_GUID(type,name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) \
+  const type name = { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
+
+#endif !_MIDL_USE_GUIDDEF_
+
+  // {8D0C0582-552A-4A6B-9455-DA63E1F329C0}
+  MIDL_DEFINE_GUID(CLSID, CLSID_pCloud_INSYNC,
+    0x8d0c0582, 0x552a, 0x4a6b, 0x94, 0x55, 0xda, 0x63, 0xe1, 0xf3, 0x29, 0xc0);
+
+  // {3858ED1B-8F1C-42ED-A8A9-FDBF591E3C6B}
+  MIDL_DEFINE_GUID(CLSID, CLSID_pCloud_NOSYNC,
+    0x3858ed1b, 0x8f1c, 0x42ed, 0xa8, 0xa9, 0xfd, 0xbf, 0x59, 0x1e, 0x3c, 0x6b);
+
+  // {D8BFAFBD-B670-4252-9C17-9CF1C64C2BAF}
+  MIDL_DEFINE_GUID(CLSID, CLSID_pCloud_INPROGRESS,
+    0xd8bfafbd, 0xb670, 0x4252, 0x9c, 0x17, 0x9c, 0xf1, 0xc6, 0x4c, 0x2b, 0xaf);
+
+#undef MIDL_DEFINE_GUID
+
+#ifdef __cplusplus
+}
+#endif
+
+